#coding=utf-8
# Copyright (c) 2016 Tinydot. inc.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.


import requests
from scrapy.http import HtmlResponse

__session__ = None
def get_request_session():
    global __session__
    if not __session__:
        __session__ = requests.session()
    return __session__


def fetch(*args, **kwargs):
    s = get_request_session()

    encoding = None
    if "encoding" in kwargs:
        encoding = kwargs.get("encoding")
        del kwargs["encoding"]

    rsp = s.request(*args, **kwargs)
    return HtmlResponse(url=rsp.url, body=rsp.content, encoding=encoding or rsp.encoding)

